Megaproject

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A very large public investment project, especially one costing more than one billion US dollars.

    "Now the incomplete border wall, already one of the costliest megaprojects in United States history, with an estimated eventual price tag of more than $15 billion, […]"

Example

More examples

"This megaproject will reduce economic opportunity in this area."

Etymology

From mega- + project.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.